FI924169A - FOERFARANDE FOER ENZYMATISK BLEKNING AV CELLULOSA - Google Patents
FOERFARANDE FOER ENZYMATISK BLEKNING AV CELLULOSA Download PDFInfo
- Publication number
- FI924169A FI924169A FI924169A FI924169A FI924169A FI 924169 A FI924169 A FI 924169A FI 924169 A FI924169 A FI 924169A FI 924169 A FI924169 A FI 924169A FI 924169 A FI924169 A FI 924169A
- Authority
- FI
- Finland
- Prior art keywords
- enzymatisk
- blekning
- cellulosa
- addition
- foerfarande foer
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
- D21C9/1089—Bleaching ; Apparatus therefor with reducing compounds with dithionites
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Paper (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Detergent Compositions (AREA)
- Medicinal Preparation (AREA)
- Cosmetics (AREA)
Abstract
The present invention concerns a process for the enzymatic bleaching of celluloses in which a) a redox potential in the range between 200 and 500 mV is set with the simultaneous dosed addition of oxidation and reducing agents and the addition of salts and complex formers to provide an aqueous cellulose-containing solution; b) a bleaching reaction is initiated by the addition of lignolytic enzymes; and c) the reaction is maintained for 15 minutes to 12 hours under continuous agitation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4008893A DE4008893A1 (en) | 1990-03-20 | 1990-03-20 | METHOD FOR ENZYMATIC BLEACHING OF CELLULAS |
PCT/EP1991/000540 WO1991014823A1 (en) | 1990-03-20 | 1991-03-19 | Process for the enzymatic bleaching of celluloses |
Publications (2)
Publication Number | Publication Date |
---|---|
FI924169A0 FI924169A0 (en) | 1992-09-17 |
FI924169A true FI924169A (en) | 1992-09-17 |
Family
ID=6402620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI924169A FI924169A (en) | 1990-03-20 | 1992-09-17 | FOERFARANDE FOER ENZYMATISK BLEKNING AV CELLULOSA |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0447673B1 (en) |
JP (1) | JPH05505857A (en) |
AT (1) | ATE119593T1 (en) |
AU (1) | AU641494B2 (en) |
BR (1) | BR9106411A (en) |
CA (1) | CA2078345A1 (en) |
DE (2) | DE4008893A1 (en) |
DK (1) | DK0447673T3 (en) |
ES (1) | ES2072965T3 (en) |
FI (1) | FI924169A (en) |
HU (1) | HUT64119A (en) |
NO (1) | NO180388C (en) |
WO (1) | WO1991014823A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4137761A1 (en) * | 1991-05-17 | 1992-11-19 | Call Hans Peter | METHOD FOR DELIGNIFYING LIGNOCELLULOSE-CONTAINING MATERIAL, BLEACHING AND TREATING WASTEWATER BY LACCASE WITH EXTENDED EFFECTIVENESS |
FI914780A0 (en) * | 1991-10-10 | 1991-10-10 | Valtion Teknillinen | FOERFARANDE FOER ENTSYMATISK BEHANDLING AV LIGNOCELLULOSAHALTIGA MATERIAL, I SYNNERHET CELLULOSAMASSOR. |
CA2115881C (en) * | 1993-02-25 | 2000-05-23 | Michael G. Paice | Non-chlorine bleaching of kraft pulp |
CA2165426C (en) * | 1993-06-16 | 2007-11-27 | Hans-Peter Call | Multi-component bleaching system |
BE1007272A3 (en) * | 1993-07-15 | 1995-05-09 | Solvay | Method of a pulp bleach. |
EP0652321B1 (en) * | 1993-11-04 | 1998-01-21 | Morton International, Inc. | Chemical pulp bleaching |
DE19820947B4 (en) * | 1997-05-12 | 2005-12-01 | Call, Krimhild | Enzymatic bleaching system with novel enzyme action enhancing compounds for altering, degrading or bleaching lignin, lignin containing materials, or altering or degrading coal, and methods using the bleaching system |
DE69726320T2 (en) * | 1997-08-14 | 2004-10-21 | Takashi Watanabe | CHEMICAL METHOD FOR DEPOLYMERIZING LIGNIN |
EP1082486B1 (en) | 1998-04-16 | 2002-09-18 | Pulp and Paper Research Institute of Canada | Oxidase process for pulp and dye oxidation |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3110117C2 (en) * | 1981-03-16 | 1983-09-29 | Adolf 5340 St. Gilgen Basler | Production of cellulose from wood or other lignocellulose-containing plants through microbial degradation of the lignocellulose |
US4692413A (en) * | 1985-07-15 | 1987-09-08 | Repligen Corporation | Use of rLDM™ 1-6 and other ligninolytic enzymes for the decolorization of E1 effluent |
US4687741A (en) * | 1985-07-15 | 1987-08-18 | Repligen Corporation | Novel enzymes which catalyze the degradation and modification of lignin |
US4690895A (en) * | 1985-07-15 | 1987-09-01 | Repligen Corporation | Use of rLDM™ 1-6 and other ligninolytic enzymes in the bleaching of kraft pulp |
DE3636208A1 (en) * | 1986-10-24 | 1988-05-05 | Call Hans Peter | METHOD FOR DELIGNIFYING AND WHICH BLEACHING LIGNICELLULOSE-CONTAINING OR LIGNINAL MATERIAL OR LIGNIN BY ENZYMATIC TREATMENT |
ZA894239B (en) * | 1988-06-08 | 1990-03-28 | Int Paper Co | Enzymatic delignification of lignocellulosic material |
-
1990
- 1990-03-20 DE DE4008893A patent/DE4008893A1/en active Granted
- 1990-12-22 ES ES90125380T patent/ES2072965T3/en not_active Expired - Lifetime
- 1990-12-22 AT AT90125380T patent/ATE119593T1/en active
- 1990-12-22 DK DK90125380.7T patent/DK0447673T3/en active
- 1990-12-22 DE DE59008655T patent/DE59008655D1/en not_active Expired - Fee Related
- 1990-12-22 EP EP90125380A patent/EP0447673B1/en not_active Expired - Lifetime
-
1991
- 1991-03-19 AU AU75432/91A patent/AU641494B2/en not_active Ceased
- 1991-03-19 HU HU922982A patent/HUT64119A/en unknown
- 1991-03-19 CA CA002078345A patent/CA2078345A1/en not_active Abandoned
- 1991-03-19 WO PCT/EP1991/000540 patent/WO1991014823A1/en active Application Filing
- 1991-03-19 JP JP91506306A patent/JPH05505857A/en active Pending
- 1991-03-19 BR BR919106411A patent/BR9106411A/en not_active Application Discontinuation
-
1992
- 1992-09-16 NO NO923601A patent/NO180388C/en unknown
- 1992-09-17 FI FI924169A patent/FI924169A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO180388B (en) | 1996-12-30 |
EP0447673A1 (en) | 1991-09-25 |
WO1991014823A1 (en) | 1991-10-03 |
NO923601L (en) | 1992-09-16 |
EP0447673B1 (en) | 1995-03-08 |
DE59008655D1 (en) | 1995-04-13 |
FI924169A0 (en) | 1992-09-17 |
CA2078345A1 (en) | 1991-09-21 |
DE4008893C2 (en) | 1992-09-03 |
DK0447673T3 (en) | 1995-07-24 |
ES2072965T3 (en) | 1995-08-01 |
ATE119593T1 (en) | 1995-03-15 |
NO180388C (en) | 1997-04-09 |
JPH05505857A (en) | 1993-08-26 |
NO923601D0 (en) | 1992-09-16 |
AU7543291A (en) | 1991-10-21 |
HUT64119A (en) | 1993-11-29 |
HU9202982D0 (en) | 1993-01-28 |
DE4008893A1 (en) | 1991-09-26 |
AU641494B2 (en) | 1993-09-23 |
BR9106411A (en) | 1993-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GB | Transfer or assigment of application |
Owner name: LIGNOZYM |
|
FD | Application lapsed |